Are Hammer Arrestors Necessary?

The general rule is that water hammer arrestors are required on all quick closing valves. ... If these hoses are reasonably flexible, chances are they will absorb the potential water hammer before it returns to the piping system.

Where are water hammer arrestors needed?

Properly sized water hammer arresters should be installed on the hot and cold water supply piping to that fixture, equipment or apparatus wherein shock can be produced. A pressure reducing valve installed on the discharge side of the water meter can be most helpful in protecting the residential piping system.

When would you use a hammer arrestor?

Water hammer arrestors are used to absorb the shock when water flowing in a piping system suddenly stops due to fast closing shutoff valves, dishwashers, and clothes washers. This action protects against annoying and potentially damaging effects of water hammer.